| 摘要 |
PROBLEM TO BE SOLVED: To realize power supply from a power supply side device with high transmission efficiency in a wireless power supply device even when a power reception side device is so small that a power reception coil cannot be mounted thereon.SOLUTION: A flexible coil 12, which is composed of a slit provided at a center part of a flexible insulation base material and a spiral shaped coil pattern provided on the insulation base material so as to enclose the slit and pushes and spreads the slit thereby expanding a circumferential area of the coil pattern, is used for a power reception side device. |
